Bit-frame.



E. S. LAGARDE L P. A. ANGENEND, J3.

BIT FRAME.

A'PPLIOATION FILED APB.1s,1911.

1,023,021 v Pat-ented p`r..9, 1912.

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E. S. LAGARDE & P. A.V ANGENEND, JR.

BIT FRAME.

APPLICATION FILED APR.,13,1911.

cOLLMBlA PLANUJRAPH cu., WASHING-rot c,

Patented Apr. 9, 1912.

UNITED sTATEs PATENT oEEicE.

EVERETTE S. LAGARDE AND PETER A. ANGENEND, JR., 0F HOUSTON, TEXAS.

BIT-FRAME.

To al? whom it may concern:

Be it known that we,-EvERETTE S. LA- GARDE and PETER A, ANGENEND, Jr.,citizens of the United States, residing at Houston, in the county ofHarris and State of r11e-iras, have invented certain new and usefulImprovements in Bit-Frames, of which the following is a specification,reference being had therein to the accompanying drawing.

This invention relates to tools for driving screws and the principalobject of the device is to provide an improved structure especiallyadapted to hold ceiling cleats in place while the screws aresimultaneously driven at each end thereof.

As is well-known the usual ceiling cleat is provided with a hole at eachend for the reception of the securing screws and it is difficult underordinary circumstances to hold the cleat and drive the screws. 'Thepresent invention provides a double bitted screw driver having yieldablemeans between the screw driver bits for engaging the cleat and holdingit firmly in position while the screws are being driven.

A preferred and practical embodiment of the invention is shown in theaccompanying drawings, wherein Figure 1 is a view in elevation of theimproved screw driving tool. Fig. 2 is a top plan'view. Fig. 3 is avertical longitudinal sectional view taken on the line 3 3, Fig. 2. Fig.4 is a horizontal sectional view taken on the line 4 4, Fig. 1. Fig. 5is a transverse vertical sectional view taken on the line 5 5, Fig. 2.Fig. 6 is a fragmentary sectional view of a single screwdriver havingthe retaining cup shown thereon. Fig. 7 is a detail perspective view ofthe upper portion of the sleeve carrying the retaining cup. v

The improved screw driving tool comprises a casing 6 that is preferablyrectangular and in the center of which a master gear 7 is journaled. Ashaft 8 projectsfrom one end of gear 7 and extends through an opening 3ain casing 6. The outer end of shaft 8 is provided with a longitudinallyeXtending socket 9 in which a shank 10 is fastened by the set screw 11.Shank 10 has a head 12 for communicating rotary power to said shank.Shafts 13 are journaled in casing 6 and are disposed on opposite sidesof gear 7. Pinions 14 are carried by shafts 13 and Specification ofLetters Patent.

Application filed April' 13, 1911.

Patented Apr. 9, 1912.

Serial No. 620,869. i

yof said drivers are inclosed by the flaring screw guiding cups 22 thathave flanged necks 23 which engage over the heads 24 of the-screwdrivers. Springs 25 are coiled about the screw drivers and interposedbetween the collars 21 and the necks 23 of cups 22, said springs tendingto hold the cups in close engagement with thel heads of the drivers.

Supporting bars 26 are slidable through the casing 6 with their pointedWork engagng ends 27 projecting well beyond the forward surface of saidcasing and their rear ends projectingbeyond the rear surface of thecasing. The projecting rear ends of bars 26 have springs 28 coiled aboutthem, said springs being fastened to said bars and the casing 6 t-ooppose rearward longitudinal movements of said bars.

Shaft S has a Vbearing cup 29 fastened thereon byy the set` screw 30,and anti-friction rollers 31 are carried by said cup and engage abearing groove 32 in the rear wall of casing 6. Anti-friction rollers 33are interposed between the rear ends of the hubs 34 of gears 15 and theinner surface of the rear wall of casing 6.

The bars 26 are arranged in pairs, that are relatively'spaced so thatthey will afford. rm supports for the tool. In use the bars 26 engagethe cleats or other-work, and hold the same in position, and the screwsare placed in the cups 22 and drop to position whereby the heads 24 ofthe drivers engage the same. By rotating shank 10, master gear 7 drivespinions 14, and said pinions, in turn, drive gears 15 and thereby rotatethe screw drivers, so that both drivers are simultaneously operated.TheV springs 25, in addito-in to normally holding the cups 22 projectedoutward, also permit said cups to move inwardly when brought in contactwith the work so that they will not prevent the screws being entirelydriven into the work, and the springs 2S of bars 26 permit said bars toyield as the tool approaches the work.

In Fig. 6 there is shown a single screwdriver provided with our improvedretaining cup wherein l@L indicates the shank provided with a handle 2,the shank la is provided with an enlarged portion 3a which acts as anabutment for one end ofthe coil spring 4a. A sleeve 5a is mounted uponthe outer end of the shank and is provided with a cup-shaped outerportion 6a and with a beveled finger gripping flange 7a which isK formedat the junction of the sleeve and cup. The coil spring 451 surrounds theinner end of the sleeve 5a and has its end seated in a groove 8a formedin the sleeve Where it is rigidly secured in place by anjy7 suitablemeans. A bit 9a is formed at the outer end of the shank and a shoulderl0 is formed just above said bit for preventing the cup from coming offthe shank.

IVhat we claim as our invention is z- In a device of the kind described,a frame, a pair of bit holders one adjacent each end of said frame,gearing to simultaneously operate said bit holders, and three or moreyieldable spring supported bars spaced widthwise and lengthwise of theframe and provided with prong ends whereby to engage and support aceiling cleat and hold the same in place.

In testimony whereof we hereunto aiiX our signatures in presence of twowitnesses.

EVERETTE S. LAGARDE. PETER A. ANGENEND, J R.

Witnesses:

JOHN II. LAGARDE, Ro'r. L. BERRYMAN.

Copies of this patent may be obtained for ive cents each, by addressingthe Commissioner of Patents, Washington. D. G.

